0820055301AVENTICS安沃驰阀岛阀芯阀片电磁阀现货供应
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0820055301AVENTICS安沃驰阀岛阀芯阀片电磁阀
换向阀原理:具有两种以上流动形式和两个以上油口的方向控制阀,
换向阀是阀门的一种,具有多向可调的通道,可适时改变流体流向,分为手动换向阀,电磁换向阀,电液换向阀等,这种变换阀在石油、化工生产中有着广泛的应用,在合成氨造气系统中常用。此外,换向阀还可作成阀瓣式的结构,多用于较小流量的场合。工作时只需转动手轮通过阀瓣来变换工作流体的流向。可实现液压油流的沟通、切断和换向,以及压力卸载和顺序动作控制的阀门。靠阀芯与阀体的相对运动的方向控制阀。有转 阀式和滑阀式两种。按阀芯在阀体内停留的工作位 置数分为二位、三位等;按与阀体相连的油路数分为 二通、三通、四通和六通等;操作阀芯运动的方式有 手动、机动、电动、液动、电液等型式,
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气动调节阀工作原理简单地说是通过压缩空气实现的,在实际应用中,了解气动调节阀工作原理有很重要的意义。
气动调节阀是以压缩空气为动力源,以气缸为执行器,并借助于电气阀门定位器、转换器、电磁阀等附件去驱动阀门,实现开关量或比例式调节,接收工业自动化控制系统的控制信号来完成调节管道介质的流量、压力、温度等各种工艺参数。气动调节阀的特点是控制简单、反应快速、本质安全,不需要另外采取防爆措施。